Classification
576 - Genetics & evolution
900 - History & geography
600 - Technology
26
620 - Engineering & allied operations
26
700 - The arts; fine & decorative arts
21
330 - Economics
16
333 - Economics of land & energy
14
380 - Commerce, communications & transportation
12
000 - Computer science, information & general works
10
140 - Specific philosophical schools
8
320 - Political science
7
363 - Other social problems & services
7
500 - Natural sciences & mathematics
7
340 - Law
6
720 - Architecture
5
610 - Medicine & health
4
630 - Agriculture & related technologies
4
658 - General management
4
580 - Plants (Botany)
3
800 - Literature & rhetoric
3
361 - Social problems & social welfare in general
2
370 - Education
2
400 - Language
2
414 - Phonology & phonetics
2
780 - Music
2
100 - Philosophy & psychology
1
200 - Religion
1
300 - Social sciences
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
410 - Linguistics
1
550 - Earth sciences
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
770 - Photography, photographs & computer art
1
791 - Public performances
1